University of Illinois Urbana-Champaign

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Showing 5941–5970 of 6,462 items
Thumbnail for The geology of Hardin County, and the adjoining part of Pope County.
The geology of Hardin County, and the adjoining part of Pope County.
Weller, Stuart; Butts, Charles; Currier, Louis W.; Salisbury, Rollin D.

Thumbnail for Year-book for 1909
Year-book for 1909
Illinois State Geological Survey